I have an 03 yukon(5.3L) it wasnt starting a while ago and it just needed a new ignition fuse. After a week of driving it, it didnt want to start again. It has a brand new battery on it and the terminals aren't corroded. All of the related fuses and relays i have checked seem to be functioning. I have also tried to jumpstart it and it didnt help at all. When i insert the key my dash lights dont come on, only the battery indicatior. It has enough power to turn on my radio and interior lights, but my gauges dont move and my headlights dont turn on either. I have also noticed i dont hear the fuel pump turning on as it normally would when the key is in the acc position. When i turn the key to start it there is no crank no click nothing. This has been nothing but a headache and im just looking for a solution so i dont have to have it towed to a shop. Thank you

  • Welcome to Motor Vehicle Maintenance & Repair! What is the actual voltage at the battery? Nov 20, 2022 at 2:42
  • The battery dropped just below 12 and i charged it up to around 12.6 and nothing.
    – Tbc
    Nov 20, 2022 at 2:46
  • While charging the battery voltage should be around 14V. So either you have a battery issue or your charging system is bad.
    – jwh20
    Nov 20, 2022 at 11:05
  • 1
    @jwh20 - You aren't going to see 14vdc charge rate unless the vehicle is running, which the OP specifically states it's not. Typical chargers won't get the battery above 13vdc and even then rarely. Most likely high 12's (ie: 12.8vdc). Nov 20, 2022 at 13:56
  • Jumping should work around low battery, bad charging system, to at least get it started if everything is well, but no joy. Then ignition fuse was blown, so something overdraw on it. Smells like a corroded ground or some other electrical issue hopefully not ecu
    – Chris
    Nov 20, 2022 at 14:44


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